If Azir Sovereign's attack trigger is on the chain and he gets removed or moved with Fate's Fortune before it resolves, do token units still move to the battlefield?

Ruling: If Azir is removed in response to his trigger, the trigger whiffs because "this battlefield" cannot be identified. If he is moved to another battlefield, the tokens move to his new battlefield. If he is moved to base, the trigger whiffs because he is not at a battlefield.

Sequence:

• When Azir attacks, his trigger goes on the chain
• As the trigger is put on the chain, choose which token units will be moved ("any number" requires targets)
• On resolution, decide whether to move them ("may" is decided at resolution)
• If Azir has been removed, the trigger whiffs
• If Azir has moved to a different battlefield, tokens move to that new battlefield
• If Azir has moved to base, the trigger whiffs

Nuances:

• "This battlefield" is defined relative to Azir's current location, not where he was when the trigger was created
• The "any number" targeting happens when the trigger goes on the chain, but the "may" choice happens on resolution